wal-g: fix license so not to break evaluation

+1 -1
+1 -1
pkgs/tools/backup/wal-g/default.nix
··· 9 9 goPackagePath = "github.com/wal-g/wal-g"; 10 10 meta = { 11 11 homepage = https://github.com/wal-g/wal-g; 12 - license = stdenv.lib.asl20; 12 + license = stdenv.lib.licenses.asl20; 13 13 description = "An archival restoration tool for Postgres"; 14 14 maintainers = [ stdenv.lib.maintainers.ocharles ]; 15 15 };